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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: NACA Wartime Reports
 Collection: Technical Report Archive and Image Library
Tests of air valves for intermittent-jet engines at speeds of 20 and 25 cycles per second

Tests of air valves for intermittent-jet engines at speeds of 20 and 25 cycles per second

Date: May 1, 1954
Creator: Mccready, Robert J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Kinetic temperature of wet surfaces : a method of calculating the amount of alcohol required to prevent ice, and the derivation of the psychometric equation

Kinetic temperature of wet surfaces : a method of calculating the amount of alcohol required to prevent ice, and the derivation of the psychometric equation

Date: January 1, 1953
Creator: Hardy, J K
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Estimation of F-3 and F-4 knock-limited performance ratings for ternary and quaternary blends containing triptane or other high-antiknock aviation-fuel blending agents

Estimation of F-3 and F-4 knock-limited performance ratings for ternary and quaternary blends containing triptane or other high-antiknock aviation-fuel blending agents

Date: January 1, 1948
Creator: Barnett, Henry C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Performance Charts for a Turbojet System

Performance Charts for a Turbojet System

Date: June 1, 1947
Creator: Karp, Irving M.
Description: Convenient charts are presented for computing the thrust, fuel consumption, and other performance values of a turbojet system. These charts take into account the effects of ram pressure, compressor pressure ratio, ratio of combustion-chamber-outlet temperature to atmospheric temperature, compressor efficiency, turbine efficiency, combustion efficiency, discharge-nozzle coefficient, losses in total pressure in the inlet to the jet-propulsion unit and in the combustion chamber, and variation in specific heats with temperature. The principal performance charts show clearly the effects of the primary variables and correction charts provide the effects of the secondary variables. The performance of illustrative cases of turbojet systems is given. It is shown that maximum thrust per unit mass rate of air flow occurs at a lower compressor pressure ratio than minimum specific fuel consumption. The thrust per unit mass rate of air flow increases as the combustion-chamber discharge temperature increases. For minimum specific fuel consumption, however, an optimum combustion-chamber discharge temperature exists, which in some cases may be less than the limiting temperature imposed by the strength temperature characteristics of present materials.
Contributing Partner: UNT Libraries Government Documents Department
Air-flow and performance characteristics of engine-stage supercharger of a double-row radial aircraft engine II : effect of design variables

Air-flow and performance characteristics of engine-stage supercharger of a double-row radial aircraft engine II : effect of design variables

Date: August 1, 1946
Creator: Dugan, Paul D.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An Experimental Investigation of Flow Conditions in the Vicinity of an NACA D(Sub S)-Type Cowling

An Experimental Investigation of Flow Conditions in the Vicinity of an NACA D(Sub S)-Type Cowling

Date: August 1, 1946
Creator: Bryant, Rosemary P. & Boswinkle, Robert W.
Description: Data are presented of the flow conditions in the vicinity of an NACA D sub S -type cowling. Tests were made of a 1/2 scale-nacelle model at inlet-velocity ratios ranging from 0.23 to 1.02 and angles of attack from 6 deg to 10 deg. The velocity and direction of flow in the vertical plane of symmetry of the cowling were determined from orifices and tufts installed on a board aligned with the flow. Diagrams showing velocity ratio contours and lines of constant flow angles are given.
Contributing Partner: UNT Libraries Government Documents Department
Wind-tunnel tests and analysis of three 10-foot-diameter three-blade tractor propellers differing in pitch distribution

Wind-tunnel tests and analysis of three 10-foot-diameter three-blade tractor propellers differing in pitch distribution

Date: August 1, 1946
Creator: Gilman, Jean, Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic characteristics of several modifications of a 0.45-scale model of the vertical tail of the Curtiss XP-62 airplane

Aerodynamic characteristics of several modifications of a 0.45-scale model of the vertical tail of the Curtiss XP-62 airplane

Date: July 1, 1946
Creator: Liddell, Robert B.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An analysis of the indications of the University of Chicago airborne turbulence indicator in gusty air

An analysis of the indications of the University of Chicago airborne turbulence indicator in gusty air

Date: July 1, 1946
Creator: Pratt, K G
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analysis of V-G Records from the SNB-1 Airplane

Analysis of V-G Records from the SNB-1 Airplane

Date: July 1, 1946
Creator: Meadows, May T. & Walker, Walter G.
Description: Availability data obtained on SNB-1 trainer-class airplanes were analyzed and results presented as flight envelopes which predict occurrences of large values of air speed and acceleration. Comparison is made with SNJ-4 trainer-class airplane data analyzed by the same method. It is concluded that flight envelopes are satisfactory; that the two types show large differences in flight loads and speeds experience; and that SNB-1 will seldom, if ever, exceed design limit load factor and restricted speed, which SNJ-4 can be expected to exceed design-limit load factor and restricted speed in a very small number of flight hours.
Contributing Partner: UNT Libraries Government Documents Department
Correlation of Wright Aeronautical Corporation cooling data on the R-3350-14 intermediate engine and comparison with data from the Langley 16-foot high-speed tunnel

Correlation of Wright Aeronautical Corporation cooling data on the R-3350-14 intermediate engine and comparison with data from the Langley 16-foot high-speed tunnel

Date: July 1, 1946
Creator: Pinkel, Benjamin & Rubert, Kennedy F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of increase in combustion-air inlet temperature from 80 to 130 F on the sea-level performance of a 22-inch-diameter pulse-jet engine

The effect of increase in combustion-air inlet temperature from 80 to 130 F on the sea-level performance of a 22-inch-diameter pulse-jet engine

Date: July 1, 1946
Creator: Hughes, Richard F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Efficiency of a radial-flow exhaust-gas turbosupercharger turbine with a 12.75-inch tip diameter

Efficiency of a radial-flow exhaust-gas turbosupercharger turbine with a 12.75-inch tip diameter

Date: July 1, 1946
Creator: Gabriel, David S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Flight investigation of factors affecting the carburetor ram and nacelle drag of an A-26B airplane

Flight investigation of factors affecting the carburetor ram and nacelle drag of an A-26B airplane

Date: July 1, 1946
Creator: Danforth, Edward C B , III
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Flight Investigation to Improve the Dynamic Longitudinal Stability and Control-Feel Characteristics of the P-63A-1 Airplane (AAF No. 42-68889) with Closely Balanced Experimental Elevators

Flight Investigation to Improve the Dynamic Longitudinal Stability and Control-Feel Characteristics of the P-63A-1 Airplane (AAF No. 42-68889) with Closely Balanced Experimental Elevators

Date: July 1, 1946
Creator: Johnson, Harold I.
Description: Results of flight tests of a control-feel aid presented. This device consisted of a spring and dashpot connected in series between the control stick and airplane structure. The device was tested in combination with an experimental elevator and bobweight which had given unsatisfactory dynamic stability and control-feel characteristics in previous tests. The control-feel aid effected marked improvement in both the control-feel characteristics and the control-feel dynamic longitudinal stability of the airplane.
Contributing Partner: UNT Libraries Government Documents Department
Paths of target-seeking missiles in two dimensions

Paths of target-seeking missiles in two dimensions

Date: July 1, 1946
Creator: Watkins, Charles E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A preliminary investigation of the icing characteristics of a large rectangular-throat pressure-type carburetor

A preliminary investigation of the icing characteristics of a large rectangular-throat pressure-type carburetor

Date: July 1, 1946
Creator: Chapman, Gilbert E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A preliminary theoretical study of helicopter-blade flutter involving dependence upon coning angle and pitch setting

A preliminary theoretical study of helicopter-blade flutter involving dependence upon coning angle and pitch setting

Date: July 1, 1946
Creator: Coleman, Robert P
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of a low-loss air valve on performance of a 22-inch-diameter pulse-jet engine

The effect of a low-loss air valve on performance of a 22-inch-diameter pulse-jet engine

Date: June 12, 1946
Creator: Bressman, Joseph R.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamics of the carburetor air scoop and the engine cowling of a single-engine torpedo-bomber-type airplane

Aerodynamics of the carburetor air scoop and the engine cowling of a single-engine torpedo-bomber-type airplane

Date: June 1, 1946
Creator: Palter, Herman
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A correlation of loadings and afterbody length-beam ratios of various flying-boat hulls

A correlation of loadings and afterbody length-beam ratios of various flying-boat hulls

Date: June 1, 1946
Creator: Parkinson, John B
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A correlation of the effects of compression ratio and inlet-air temperature on the knock limits of aviation fuels in a CFR engine II

A correlation of the effects of compression ratio and inlet-air temperature on the knock limits of aviation fuels in a CFR engine II

Date: June 1, 1946
Creator: Evvard, John C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of liquid and ice particles on the erosion of a supercharger-inlet cover and diffuser vanes

The effect of liquid and ice particles on the erosion of a supercharger-inlet cover and diffuser vanes

Date: June 1, 1946
Creator: Rollin, Vern G
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Flight measurements by various methods of the drag characteristics of the XP-51 airplane

Flight measurements by various methods of the drag characteristics of the XP-51 airplane

Date: June 1, 1946
Creator: Beadle, Dorothy E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
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